Cool and store the mushroom mixture. To reheat the mushroom mixture: Add a splash of stock or water over medium heat and season with salt and pepper.

To reheat the sausages: Add a splash of stock or water to the sausages to loosen the sauce. Add a ladle of sauce to the mushroom pan.

Preheat the oven to 375 degrees. Split the bread horizontally then halve into 4 large pieces. Arrange the bread pieces on cooling racks set over baking sheets to allow the heat to circulate all around the bread. Halve the sausages lengthwise. Dot the bread with sauce, top with the sausages cut-side-down, dot with more sauce and top with peppers and cheese. Bake the bread 12 to 15 minutes, or until melted and brown at the edges. Garnish with parsley and serve.